本文選題：頻率傳輸　切入點：時延抖動　出處：《光電子·激光》2016年03期

【摘要】：分析了影響光纖頻率傳輸精度的主要因素,設(shè)計并實現(xiàn)了一種新的基于鎖相環(huán)(PLL)補(bǔ)償?shù)碾p向異頻傳輸方案。首先,為了確定光纖鏈路引入的不穩(wěn)定性,設(shè)計了恒溫條件下鏈路穩(wěn)定性測試方案,通過光電聯(lián)合測試得出了鏈路傳輸指標(biāo);然后,結(jié)合環(huán)境溫度及PLL對光纖頻率傳輸?shù)挠绊?設(shè)計了環(huán)境溫度影響下鏈路時延穩(wěn)定性測試方案,并搭建了實驗平臺;最后,進(jìn)行了光纖傳輸實驗,分析了環(huán)境溫度和阻尼系數(shù)變化對傳輸性能的影響。結(jié)果表明,由于PLL的有效補(bǔ)償,10 MHz高精度原子鐘頻率信號經(jīng)過25km的光纖傳輸后仍能保持很高的穩(wěn)定性;本文方案下的鏈路時延抖動在環(huán)境溫度慢變時可以穩(wěn)定在0.5ns以內(nèi),顯著降低了實際光纖應(yīng)用中傳輸時延的不穩(wěn)定性。
[Abstract]:This paper analyzes the main factors that affect the accuracy of fiber frequency transmission, and designs and implements a new bidirectional different frequency transmission scheme based on phase-locked loop (PLL) compensation.First of all, in order to determine the instability of optical fiber link, the test scheme of link stability under constant temperature is designed, and the link transmission index is obtained by photoelectric joint test. Then, considering the influence of environment temperature and PLL on fiber frequency transmission,The test scheme of link delay stability under the influence of ambient temperature is designed, and the experimental platform is built. Finally, the fiber transmission experiment is carried out, and the influence of the change of ambient temperature and damping coefficient on the transmission performance is analyzed.The results show that the high precision atomic clock frequency signal of 10 MHz can be transmitted through the optical fiber of 25km because of the effective compensation of PLL, and the link delay jitter in this scheme can be stabilized within 0.5ns when the ambient temperature changes slowly.The instability of transmission delay in practical fiber applications is significantly reduced.
【作者單位】： 空軍預(yù)警學(xué)院;航天飛行動力學(xué)技術(shù)重點實驗室;
【基金】：航天飛行動力學(xué)技術(shù)重點實驗室開放基金(2013afdl009)資助項目
【分類號】：TN253

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